So... Just my 2 cents here. Not a network engineer.

But the traces your running don't seem to matter. I don't feel 150 ms of lag.

From the videos it seems to me like 1000 ms of lag. Or more.

I mean I can run stuff through Wireshark and check out what's going on behind the scenes, but... I kinda feel like it's on SE to resolve the issue. It's not just 1 or 2 people. It's a lot. We have pages and pages of people concerned about this problem.

The most effective way would be for them reach out to us. Acknowledge there is some sort of problem. Ask us to do tests so we can provide them with feedback. Then provide us with feedback. I doubt it, but heck, but thousands of people could be incorrectly routed to horrible internet connections.

That's not happening so we're in the dark. Which is OK with them apparently. That's my biggest concern.